Posts Tagged ‘king tide’

Cold water, big tides

January 12, 2017

After a very cold night, there was a layer of ice on Pedder Bay again this morning which allowed for some interesting observations and data collection by marine scientists.


Data below were collected by second year Marine Science students at two different times of the morning.

8:05 am 11:00 am
Depth (m) Temp (oC) Salinity (ppt) Temp (oC) Salinity (ppt)
0 3.7 28.4 4.6 25.9
0.5 5.8 29.3 5.8 30.1
1.0 6.4 30.3 6.7 30.6
2.0 6.7 30.6 6.7 30.7
3.0 6.7 30.7 6.8 30.8
4.0 6.8 30.7 6.9 30.8
5.0 6.8 30.7 6.9 30.8

One major conclusion can be drawn:

The water is COLD (right down to 5 m where we usually measure temperatures around 10oC). It is so cold that students’ tongues are turning blue:


Wait a minute… the cold is not the reason for the blue tongues in these Biology students!

We are also experiencing big tides these days (2.8 m tidal range). High tides in the early afternoon:

Then low tides at night:


Emilio, Heather & Millie at low tide (20:15 11 Jan 2017)

Interesting times!

A stormy day and another very high tide

December 10, 2015


With waves breaking beside the Pearson College dock and an extremely high tide again, it was an exciting morning in the floating building.


Above are B block marine scientists beside the pile with the tide gauge on it. I’ll take another photo of the same team during a low tide…

A very high tide

December 8, 2015

Flat rampIt is rare that the tide is so high that the lower ramp is horizontal, but today it was… And the upper ramp was inclined upward to the floating building.High tideAnd the pilings were still securing the building and dock, but they were relatively quite short…


…just slightly more than one Budnik!


Below is a photo from a king tide last year:


A very high tide

December 10, 2014

Michal2With all the rain, the low atmospheric pressure and the spring tides we are seeing evidence of very high high tides – a king tide. Michal was able to touch the top of the piling.

On that piling is a tide gauge that was set up by a four students for their Group 4 project. Although it is not ‘calibrated’, I suspect they did not see such a high during their sampling.

Tide guage


Check out the height of the water under the ramp to the lower floor of the floating building:


And the angle of the ramp to the upper floor:

RampFor comparison, I’ll post additional photos of extremely low tides when they occur.